Heat Release Rate and Induced Wind Field in a Large Scale Fire.
Heat Release Rate and Induced Wind Field in a Large
Scale Fire.
(715 K)
Ohlemiller, T. J.; Corley, D. M.
Combustion Science and Technology, Vol. 97, 315-330,
1994.
Sponsor:
Defense Nuclear Agency, Alexandria, VA
Keywords:
large scale fire tests; forest fires; heat release rate;
wind effects
Abstract:
Logging slash on a 486 hectare site in Ontario was
burned as part of a Forestry Canada forest management
program. A 100 hectare portion of this site was
instrumented by several groups interested in large scale
fires. NIST utilized Forestry Canada data on mass
loading before and after the fire, total burning area as
a function of time and burning duration to estimate the
spatial and temporal pattern of heat release during the
burning of the instrumented section of the fire. The
heat release rate was estimated to reach 2-4 x 10(7)kW
during the time of interest. This information was
utilized in the context of a flow model due to Baum and
McCaffrey to calculate the near-ground flow field
induced by this heat release pattern; the results
compared moderately well with point measurements made in
the field.
Building and Fire Research Laboratory
National Institute of Standards and Technology
Gaithersburg, MD 20899